Abstract
This paper reports a research study that investigated buckling of stiffened rectangular isotropic plates elastically restrained along all the edges (CCCC) under uniaxial in-plane load, using the work principle approach. The stiffeners were assumed to be rigidly connected to the plate. Analyses for critical buckling of stiffened plates were carried out by varying parameters, such as the number of stiffeners, stiffness properties and aspect ratios. The study involved a theoretical derivation of a peculiar shape function by applying the boundary conditions of the plate on Taylor Maclaurin’s displacement function and substituted on buckling equation derived to obtain buckling solutions. The present solutions were validated using a trigonometric function in the energy method from previous works. Coefficients, <i>K</i>, were compared for various numbers of stiffeners and the maximum percentage difference obtained within the range of aspect ratios of <i>1.0</i> to <i>2.0</i> is shown in Figs 2 - 7. A number of numerical examples were presented to demonstrate the accuracy and convergence of the current solutions.
Highlights
Stiffened plates are a critical class of structural elements widely used in aerospace, marine, nuclear, mechanical and structural engineering (Zhang and Lin [1])
The main objective of this work is to present solutions for buckling analysis of stiffened rectangular isotropic plates elastically restrained along all the edges using the work principle and polynomial function intended for design of stiffened systems in accordance with AASHTO [12] specifications
Buckling of stiffened rectangular isotropic plates elastically restrained along all the edges (CCCC) was investigated
Summary
Stiffened plates are a critical class of structural elements widely used in aerospace, marine, nuclear, mechanical and structural engineering (Zhang and Lin [1]). A numerical approach such as the conventional finite element method is a versatile method and has been widely used in the study of stiffened plates to obtain approximate solutions as in Guo and Harik [2], Wang and Yuan [3].The FEM is computationally efficient for predicting buckling coefficients irrespective of boundary conditions, stiffeners shapes and orientation. It requires great computational efforts and Elastic buckling analysis of uniaxially compressed
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